Genlock frequency generator

Details Genlock frequency generator Genlock frequency generator

1991-01-31

1992-10-13

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358158, 358183, 358150, 358 22, H04N 5268, H04N 5272, H04N 5275

Patent

active

051555956

ABSTRACT:
A genlock frequency generation system synchronizes a dependent, or controllable, video source to an independent video source, with the capability of reverting to some predetermined default conditions in the event that no coherent independent video signal is found. The genlock frequency generation system is capable of placing a dependent video image in an arbitrary rectangular area overlaying the independent video image. Method and apparatus are disclosed.

REFERENCES:
patent: 4580165 (1986-04-01), Patton et al.
patent: 4591910 (1986-05-01), Lai et al.
patent: 4611230 (1986-09-01), Nienaber
patent: 4639765 (1987-01-01), D'Hont

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